Towards a standard upper ontology
Proceedings of the international conference on Formal Ontology in Information Systems - Volume 2001
AI Magazine
A reference ontology for biomedical informatics: the foundational model of anatomy
Journal of Biomedical Informatics - Special issue: Unified medical language system
Isabelle/HOL: a proof assistant for higher-order logic
Isabelle/HOL: a proof assistant for higher-order logic
A spatio-temporal ontology for geographic information integration
International Journal of Geographical Information Science
A taxonomy of collective phenomena
Applied Ontology
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We develop a formal theory of mereology that includes relations that change over time. We show how this theory formalizes reasoning over domains of material objects, which include not only integral objects (my computer, your liver) but also portions of stuff (the water in your glass, the blood in a vial). In particular, we use different mereological summation relations to distinguish between the ways in which i) integral objects, ii) portions of unstructured, homogenous stuffs (e.g. the water in your glass), and iii) mixtures (the blood in a vial) are linked to their parts over time.